Home / 148,890.32-205,458-85,227.20

Finding the Fourth Proportional to 148,890.32, 205,458 and 85,227.20

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Solution

The fourth proportional to 148,890.32, 205,458 and 85,227.20 is: 117,607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,890.32 : 205,458 = 85,227.20 : x
  2. Step 2: Convert to fraction form
    148,890.32/205,458 = 85,227.20/x
  3. Step 3: Cross multiply
    148,890.32x = 205,458 × 85,227.20
  4. Step 4: Simplify right side
    148,890.32x = 17,510,610,057.60
  5. Step 5: Solve for x
    x = 17,510,610,057.60/148,890.32
  6. Step 6: Final answer
    x = 117,607.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.